Strangely was experimenting with a Strawberry caipirinha before I saw this recipe. I used 4 Strawberries which I agree is probably too much, however substituted 15ml of framboise for 10ml of the cachaça; to balance this I put in 2 or three spots of good balsamic vinegar (like you do with bitters). Worked well as just gave a sweet but sour edge. Think it would work WITH the basil as well. Give it a go and tell me what you think?
Unlike many comments on here I found that the St Germain 'hid' itself well in these proportions; I do however prefer a little more bitterness so ended up with 4:2:1 proportions, will be drinking again though
Complicated business this cocktail making